Accumulate!

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

1 files changed, 1 insertions, 1 deletions

diff --git a/main.c b/main.c
index 315ff3a..af34062 100644
--- a/main.c
+++ b/main.c
@@ -135,7 +135,7 @@ static void report_dcache_time(struct timespec *start, struct timespec *end)
 	unsigned long msecs;
 
 	msecs = (end->tv_sec - start->tv_sec) * MSEC_PER_SEC;
-	msecs = (end->tv_nsec - start->tv_nsec) / NSEC_PER_MSEC;
+	msecs += (end->tv_nsec - start->tv_nsec) / NSEC_PER_MSEC;
 
 	printf("cache maintenance took %lu milliseconds\n", msecs);
 }